Electromagnetic fields for an irregularly shaped, near-spherical particle illuminated by a focused laser beam

J. P. Barton, D. R. Alexander

Research output: Contribution to journalArticle

30 Scopus citations


A theoretical procedure is derived for the determination of the internal and external electromagnetic fields for a monochromatic beam incident upon a homogeneous particle of arbitrarily-defined shape. The procedure is best suited for the analysis of near-spherical particles (i.e., particles which deviate from a sphere by plus or minus a few tenths of a radii). Verification and demonstration calculations are presented. Also presented are calculations investigating the effect of a surface deformation on resonance excitation within an otherwise spherical particle.

Original languageEnglish (US)
Pages (from-to)7973-7986
Number of pages14
JournalJournal of Applied Physics
Issue number12
Publication statusPublished - Dec 1 1991


ASJC Scopus subject areas

  • Physics and Astronomy(all)

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